IP Routing – Network technologies and trendshttp://itknowledgeexchange.techtarget.com/network-technologies
Sun, 30 Oct 2016 17:22:58 +0000en-UShourly1How to configure OSPF Totally Stubby Area in Cisco Routers- Series 2?http://itknowledgeexchange.techtarget.com/network-technologies/configure-ospf-totally-stubby-area-cisco-routers-series-2/
http://itknowledgeexchange.techtarget.com/network-technologies/configure-ospf-totally-stubby-area-cisco-routers-series-2/#respondWed, 27 Jan 2016 06:00:38 +0000http://itknowledgeexchange.techtarget.com/network-technologies/?p=2174In my previous post we studied the topology and saw how Type 3, Type 4 and Type LSA routes are installed in non 0 Area. Now lets configure Area 5 as a Totally Stubby Area and see what impact it will have In order to configure Totally Stubby Area one should use the following Cisco...

]]>In my previous post we studied the topology and saw how Type 3, Type 4 and Type LSA routes are installed in non 0 Area. Now lets configure Area 5 as a Totally Stubby Area and see what impact it will have

In order to configure Totally Stubby Area one should use the following Cisco IOS Command in an ABR under OSPF process

router ospf 1

area x stub no-summary

And on the non ABR router of Totally Stubby Area as the following Cisco IOS commands

router ospf 1

area x stub

In our case we need to configure Area 5 as Totally stubby area by using the below Cisco IOS command in Routers R2 which happens to be ABR

And in R3 Router

Now we have successfully configured Area 5 as Totally Stubby Area, we could see R2 is learning R4 loopback networks 10.0.1.0, 10.0.2.0, 10.0.3.0 & 10.0.4.0 as Type 5 LSA ( OPPF external type 2 routes) and R1-R4 link networks 192.168.14.0 as Type 3 LSA ( Inter area routes) and R2 will inject remove these routes and inject them with a default route to R3.

R3 can now only see a default route and if we check the OSPF Data base there are no more Inter-Area specific routes,

Also we cannot see the R4 loopback interface 10.0.1.0 network in the routing table , how ever its there in CEF table

And we ping the loopback 1 interface IP 10.0.1.1 of R4

Well Totally Stubby Area is great feature which helps in reducing the OSPF Database size and also it reduces the CPU utilization of a router.

]]>http://itknowledgeexchange.techtarget.com/network-technologies/configure-ospf-totally-stubby-area-cisco-routers-series-2/feed/0Cisco CCIE Service Provider Version 4.0 debuts on 22nd of May 2015http://itknowledgeexchange.techtarget.com/network-technologies/cisco-ccie-service-provider-version-4-0-debuts-on-22nd-of-may-2015/
http://itknowledgeexchange.techtarget.com/network-technologies/cisco-ccie-service-provider-version-4-0-debuts-on-22nd-of-may-2015/#respondSat, 25 Apr 2015 20:15:48 +0000http://itknowledgeexchange.techtarget.com/network-technologies/?p=1622Starting May 22nd 2015, CCIE Service Provider version 4.0 is making the debut, like other CCIE written exams, the Cisco CCIE® Service Provider Written Exam (400-201) version 4.0 lasts for two hours and one can expect 90-110 questions. These questions are designed to validate how a Service Provider Professional is capable of designing; implementing, diagnosing...

]]>Starting May 22nd 2015, CCIE Service Provider version 4.0 is making the debut, like other CCIE written exams, the Cisco CCIE® Service Provider Written Exam (400-201) version 4.0 lasts for two hours and one can expect 90-110 questions. These questions are designed to validate how a Service Provider Professional is capable of designing; implementing, diagnosing and troubleshooting complex Service providers network infrastructures and services based on dual stack solutions (IPv4 and IPv6).

The Cisco CCIE® Service Provider Written Exam (400-201) covers following 6 domains

Service Provider Architecture and Evolution

Core Routing

Service Provider Based Services

Access and Aggregation

High Availability and Fast Convergence

Service Provider Security, Service Provider Operation and Management

Since a dedicated title from Cisco Press is not yet released, following Cisco Press titles can be used as the reference for the preparations of the CCIE® Service Provider Written Exam (400-201)

Cisco Live presentations are also great resources for the preparations; you can find more details about them on the INE CCIE Service Provider v4 Kickoff classes. If you have an access INE All Access Pass you can watch those videos or attend the class live on line.

I wish all those early exam takers all the best. Those who are new to CCIE journey, I encourage them to read the post I wrote about why do I want to be CCIE ?